In a groundbreaking achievement, Ann Johnson, who was left severely paralyzed and speechless after a stroke 18 years ago, has regained her voice thanks to a pioneering brain implant and artificial intelligence technology.
Developed by researchers at the University of California, this innovative system translates Johnson’s brain signals into audible words, spoken through a personalized digital avatar. The implant, containing 253 electrodes, intercepts brain signals from Johnson’s neurons, which are then sent to a computer bank via a cable.
The AI algorithms convert these signals into words and sentences, spoken through the avatar, essentially giving Johnson a voice again. The technology also simulates facial movements on the avatar, making it even more lifelike.
This remarkable achievement has enabled Johnson to communicate at a rate of nearly 80 words per minute, with a median accuracy of 75%. The results, published in Nature, demonstrate a significant improvement over previous systems.
Johnson’s emotional response to hearing her own voice through the avatar highlights the impact of this technology. She hopes to use it to become a counselor, helping others feel more at ease.
This revolutionary breakthrough offers new hope for individuals with severe paralysis, demonstrating the potential of brain-computer interfaces and AI to restore communication and improve lives.